A machine tool has: a main shaft head that supports the main shaft; a main shaft head support part which supports the main shaft head such that the main shaft head can rotate around a first axis that extends perpendicular to the main shaft axis of rotation; a first rotary feed shaft device which is provided in the main shaft head support part, and rotates and feeds the main shaft head around the first axis; a saddle which supports the main shaft head support part such that the main shaft head support part can rotate around a second axis that is perpendicular to the first axis and inclined with respect to the vertical direction; and a second rotary feed shaft device which is provided in the saddle, and rotates and feeds the main shaft head support part around a second axis of rotation.

The invention provides a machine tool capable of expanding the slidable range of the moving unit without making the oil feeding system complicated. A machine tool in which a moving unit slides against a supporting unit with a sliding surface of the supporting unit facing a sliding surface of the moving unit, comprises a first oil groove formed on an unexposed portion of the sliding surface of the supporting unit; a second oil groove formed on an unexposed portion of the sliding surface of the moving unit; and an oil inlet formed on one of the first oil groove and the second oil groove. Lubricant fed through the oil inlet is supplied to the other of the first oil groove and the second oil groove.

A machine tool includes a frame with two opposite frame sections, a number of leg elements arranged on the frame, and a first carriage having a first linear axis. The first carriage is guided on the two opposite sections of the frame and is displaceable in a first direction. A second carriage of a second linear axis is guided on the first carriage and is displaceable in a second direction A tower element has a third linear axis, which is retained on the second carriage. A machining element is retained on the tower element and is displaceable in a third direction, and a tool spindle is arranged on the machining element for receiving a tool.

Cement or other liquid-like material fills the hollow tubes of a machine tool under construction. The machine tool structures are held rigidly against a fixture while the substance dries. The machine tool so constructed is relatively lightweight and rigid, and obviates the need for precision machining of large portions of the apparatus.

A flay assembly for separating a workpiece from a manufacturing fixture has a horizontal beam assembly and a pair of vertical beam assemblies. The horizontal beam assembly includes a horizontal beam having a horizontal drive motor. Each vertical beam assembly includes a vertical beam operably engaged to the horizontal drive motor and has a workpiece attachment assembly operably engaged to a vertical drive motor. The workpiece attachment assembly has an attachment mechanism attachable to the workpiece. The horizontal drive motor and the vertical drive motors are operable in a manner to move the vertical beams away from each other along a horizontal drive axis while simultaneously moving each workpiece attachment assembly along a vertical drive axis to cause the attachment mechanisms to pull the workpiece side portions away from the manufacturing fixture while a center support of the horizontal beam maintains a workpiece crown in contact with the manufacturing fixture.

Cement or other liquid-like material fills the hollow tubes of a machine tool under construction. The machine tool structures are held rigidly against a fixture while the substance dries. The machine tool so constructed is relatively lightweight and rigid, and obviates the need for precision machining of large portions of the apparatus.

A machine tool has at least 5 axes. A tool holder assembly permits a tool holder spindle to be displaced relative to the frame along a first axis of translation and along a second axis of translation perpendicular to the first axis of translation and implementing slides in a plane forming an angle of between +40 and +50 relative to the first axis of translation. A part holder assembly permits a part to be displaced along a third axis of translation perpendicular to the other axes of translation, about a first axis of rotation parallel to the third axis of translation and about a second axis of rotation perpendicular to the first axis of rotation. The length of the precision path connecting the part to the tool via the frame and the assemblies of the machine is less than 1600 mm.

A positioning device, in particular a tool positioning device, for a processing center that comprises a compound slide with a first slide movable in a longitudinal direction of the processing center and a second slide that can be moved in a transverse direction relative to the first slide. The first and the second slides have a matching offset configuration of the sides opposite each other, that bear guides and guide elements that interact with each other in order to guide the second slide in the transverse direction. These guides and guide elements are in part arranged at different heights in a vertical direction in such a manner that the second slide is guided on the first slide on at least two spaced apart guiding points, wherein the guiding distance between the guiding points varies during a traversing motion of the second slide relative to the first slide in the transverse direction.

A numerically controlled machine tool that can accurately control a position of a machining member for machining a workpiece. The numerically controlled machine tool comprises: a first post member installed on a main body slidingly in a left/right direction; and first, second and third horizontal rails installed on the main body lengthily in the left/right direction and respectively coupled to two points of the rear surface and one point of the front surface of the first post member for guiding sliding of the first post member.

A horizontal machining center serving as a machine tool includes: a bed; a front-side guide rail shaped to extend linearly along an upper surface of the bed and attached to the bed; and a column provided on the upper surface of the bed and fixed to the bed. The column has a facing portion arranged to face an end of the front-side guide rail in an X-axis direction in which the front-side guide rail linearly extends. The facing portion is provided with a hole through which the front-side guide rail can be inserted. By such a configuration, a machine tool with excellent workability during removal of an elongate body is provided.